Compare ET Solar Group ET-M648WW/WB 220 vs RITEK MM72-6RT-320

Warranty Terms

Output Warranty:

25 Years of 81.4% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 220 Wp

Efficiency: 16.75 %

Voltage at Maximum Power VMPP: 25.21 V

Current at Maximum Power IMPP: 8.73 A

Open Circuit Voltage VOC: 31.26 V

Short Circuit Current ISC: 9.14 A

Power Tolerance Positive: + 2 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.42 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.05 %/°C

Solar Panel Attributes

Weight: 15 kg

Cell Type: Monocrystalline

Cell Count: 48

Glass Thickness: unknown

Juntion Box Protection Class: IP 67

Cable Length: unknown

Glass Type: unknown

Warranty Terms

Output Warranty:

10 Years of 90% Output Power, 25 Years of 80% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 320 Wp

Efficiency: 16.44 %

Voltage at Maximum Power VMPP: 36.9 V

Current at Maximum Power IMPP: 8.57 A

Open Circuit Voltage VOC: 45.4 V

Short Circuit Current ISC: 9.05 A

Power Tolerance Positive: + 3 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.459 %/°C

Temperature Coefficient of Voc: -0.339 %/°C

Temperature Coefficient of Isc: 0.054 %/°C

Solar Panel Attributes

Weight: 22 kg

Cell Type: Monocrystalline

Cell Count: 72

Glass Thickness: unknown

Juntion Box Protection Class: unknown

Cable Length: unknown

Glass Type: unknown